Sarah Jessica Parker, Susan Sarandon and former first daughter Barbara Bush are among an extremely long list of celebrities set to appear at a fundraiser for Maryland's same-sex marriage law. The event will be atop the James Hotel in New York City in mid-September. Tickets start at $250. The Free State is one of four where same-sex marriage is on the ballot this year. No state has ever upheld gay nuptials at the ballot box, however polling (funded by a gay rights group) shows Marylanders are open to the idea. Here's a look at some of the celebrities scheduled to attend.--Annie Linskey Read more on the Maryland Politics blog.

Annie Linskey, The Baltimore Sun

Supporters of Maryland's new same-sex marriage law look to the Empire State for cash this evening at a fundraiser hosted by a bevy of boldfaced names.

Susan Sarandon, Josh Charles, John Waters and ice hockey player Sean Avery are among the stars expected to mingle with supporters who are paying between $250 and $25,000 to be at the Manhattan event. Gov. Martin O'Malley is also planning to be there as a "special guest."

Opponents to the new law have taken notice. Derek McCoy, the executive director of Maryland Marriage Alliance, wrote in a fundraising e-mail sent out yesterday: "We know that in spite of the millions that they will receive from movie stars, Marylanders will not allow marriage to be redefined." It was followed by a plea for $100, $250 or $500.

Maryland's General Assembly passed a law legalizing same-sex marriage in March, but McCoy and his group gathered enough signatures to put it on the ballot. Marylanders will therefore have the final say in November. Three other states are also voting on same-sex marriage questions: Maine, Minnesota and Washington state.